import { format, formatDistanceToNow } from "date-fns";
import { ko } from "date-fns/locale";

/** 날짜 포맷 (YYYY-MM-DD) */
export function formatDate(date: string | Date): string {
  return format(new Date(date), "yyyy-MM-dd");
}

/** 날짜+시간 포맷 (YYYY-MM-DD HH:mm) */
export function formatDateTime(date: string | Date): string {
  return format(new Date(date), "yyyy-MM-dd HH:mm");
}

/** 상대 시간 (예: "3분 전") */
export function formatRelativeTime(date: string | Date): string {
  return formatDistanceToNow(new Date(date), { addSuffix: true, locale: ko });
}

/** 숫자 포맷 (천 단위 콤마) */
export function formatNumber(value: number): string {
  return new Intl.NumberFormat("ko-KR").format(value);
}